Draining cock



Oct. 8, 1935. F. HARTKE v 2,6%,97

DRAINING' COCK Filed May 24, 1953 Patented oct. s, 1935 PATENT oFFlcE DRAINING COCK Fritz Hartke, Berlin-Altgliem'cke, Germany, as-

signor to Saureschutz-Gesellschaft m. b. H., Berlin-Altglienicke, Germany Application May 24, 1933, Serial No. 672,679 In Germany May 24, 1932 4 Claims. (C1. 277-24) The invention relates to improvements in draining cocks in which a valve is provided being adapted to be controlled by the intermediary of the plug of the cock. As the new cock mainly is to be used 5 with acids, lyes, and similar uids for which iron or brass cannot be employed it consists of acidproof-material such as articial resin, india rubber, and the like.

The object of the invention is to provide a simple construction having a fixed outlet and being adapted to be set into action in just the same way as is the case with the commonly known cocks.

This object will be attained by the mechanism illustrated in the accompanying drawing, in

which Figure 1 is a vertical section of a cock partly in elevation, and

Figure 2 is a vertical section of. a modified construction of the cock according to Figure 1.

The draining cock as illustrated in Fig. 1 mainly consists of the body I, the anged inlet part 2, the outlet 3 and the plug 6. The inlet passage is enlarged to form a chamber 'I in which a valve disc 8 is provided having a central opening 9. Said disc is made of springy or elastic material such as india rubber and is formed in such a Way as to tend to maintain the open passage through the cock as shown in the drawing. Adjacent to the disc 8 a valve seat 4 having passages 5 is provided in the chamber 'I. By pressing the elastic disc 8 upon the seat i the passages 5 may be closed. Between the chamber I on one end and the plug on the other end the passage of the cock is enlarged to allow the insertion of a sleeve I0, the passage of same being flush with the passage I3 of the plug 6. The latter is provided with an eccentrically placed middle part I2 on which one end of the sleeve Il] abuts under the action oi the springy disc 8 abutting the other end of the sleeve I.

In the position shown in the drawing the passage through the cock is open and the fluid may flow from the inlet end of the cock to the outlet 3. To close the passage the plug is to be rotated in counter clockwise direction, the eccentrical middle part I 2 arranged on the plug 6 thereby pushes the sleeve against the action of the springy disc 8 to the seat i of the valve and presses the disc on the seat. To open the cock the plug is to be rotated in the opposite direction so that the elastic disc 8 lifts itself off the seat the more the eccentrical middle part I2 on the plug allows the movement of, the sleeve. y

In the modification shown in Fig. 2 the body of the cock consists of two parts I and Ia respectively between which the ring shaped plug Iia is arranged. The inner wall of the plug is provided with a screw thread I I engaging a corresponding screw thread on the outer wall of the sleeve I0. being prevented from rotation by the intermediary of guides I6 adapted to slide in corresponding slots 5 arranged in the body Ia. The inlet body I as well as the outlet body Ia are provided with the chamber 'I in which the elastic discs 8 are arranged. In the inlet body I the valve seat I is inserted having passages 5. 'Ihe elastic disc is so formed as to 10 abut the one end of the sleeve IU, with which the central opening 9 is ilush. The outlet body Ia has also a chamber 'I with a valve disc 8 but there is no valve seat. This disc 8 has for its obj ect always to abut the end of the sleeve and to prevent the 15 uid flowing through the cock in the direction of the arrows (Fig. 2) from entering into the space between the outer wall of the sleeve I0 and the cock body. To hold together the body I, the ring shaped plug te, and the body la, clips I4 are ar- 20 ranged on the body and fitting in corresponding grooves of the plug 6a.

In Fig. 2 the cock is shown in its open position. To close the passage through the cock the ring plug 6a is to be rotated in such direction as to slide 25 the sleeve III in the opposite direction. The yielding valve disc 8 in the inlet chamber 'I thereby is pressed upon the seat 4 of the inlet valve. 'I'he elastic disc in the outlet chamber 7 will not come out of contact with the end of the sleeve I0 as it 30 is always pressed on the sleeve by its own elasticity.

To open the cock the plug is to be rotated in the opposite direction;

1. In a valve, the combination of a body, a valve seat with valve passages arranged in said body,

an apertured elastic valve disk flexedly mounted adjacent said valve seat so as toclose and seal said passages when forcibly moved but adapted to move 40 away from said seat by its elasticity and flexed mounting, and means for moving said Valve disk axially into engagement with said seat.

2. In a draining cock, the combination of a body, a movable member therein, a valve seat with 45. valve passages arranged in the inlet of said body, an elastic valve disk iiexedly mounted adjacent said valve seat so as to close and seal said passages when forcibly moved but adapted to move away from said seat by its elasticity and iiexed mount- 50 ing, and a sleeve abutting said disk and actuatable by said movable member to move said disk axially into engagement with said seat.

3. In a draining cock, the combination of .a body, a rotatable plug therein, a valve seat with 55 Valvepassages arranged in the inlet of said body, an elastic valve disk flexedly mounted adjacent said valve seat so as to close and seal said passages when forcibly moved but adapted to move away from said seat by its elasticity and flexed mounting, and a sleeve abutting said disk and actuatable by said plug to move said disk axially into engagement with said seat. l

4. In a draining cock, the combination of a twopart body, a rotatable ring interposed therebetween, a valve seat with valve passages arranged in the inlet of said body, an elastic valve disk flexibly mounted adjacent said valve seat so as to close and seal said passages when forcibly moved but adapted to move away from said seai'l by its elasticity and flexed mounting, and a sleeve abutting said disk and actuatable by said ring to move said disk axially into engagement with said seat.

FRITZ HARTKE. 

